1993 Mercury Grand Marquis Exterior lighting Problems
- Complaints
- 11about this part
- Share
- 8%of 144 total for the year
- Median mileage
- 154,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 11 complaints about the exterior lighting of the 1993 Mercury Grand Marquis, 8% of the 144 complaints for this model year. Where a mileage was given, the median is 154,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Extremely dangerous situation exists whereas the headlights can randomly flicker off during driving, only stopped by kicking the light control module above the accelerator pedal repeatedly with limited and temporary results. First occurrence was on the interstate during the night with moderate traffic. Multiple other terrifying occurrences as well.”
NHTSA complaint #11316976, filed 2020-03, 90,000 miles“The contact owns a 1993 Mercury Grand Marquis. While driving at approximately 55 MPH, the headlights failed. The contact shut off the engine and when restarting, the headlights were operating as normal. The contact discovered that the wiring harness was burned and replaced the harness. The failure continued to recur intermittently. The vehicle was not taken into the dealer for a diagnostic of the failure. The failure mileage was 218,000 and the current mileage was unknown.”
NHTSA complaint #10336838, filed 2010-06, 218,000 miles“While the vehicle was in the parking gear, with ignition running, smoke started coming from under the dash by the wiring harness. Vehicle was driven to the dealership the next day. Vehicle was checked out, and the brake on and off switch was replaced, which kept the vehicle from coming out of park. Consumer still experiencing electrical problems. Please provide any further details.”
NHTSA complaint #851240, filed 1999-10“Failed torque converter caused vehicle to vibrate. After torque converter was repaired all vehicle lighting ceased, interior and exterior, and the speedometer was erratic. Speedometer read 75-80 MPH when vehicle was actually going 20-25 MPH.”
NHTSA complaint #529529, filed 1998-01“Headlight switch replaced for third time, dealer cannot explain why shorted out, switch is not interchangeable with newer or older models. Please add additional information. Part number f2az-11654-a.”
NHTSA complaint #875242, filed 2000-11Exterior lighting: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2010 | 2 | 8% |
| 2009 | 1 | 4% |
| 2008 | 5 | 6% |
| 2007 | 5 | 5% |
| 2006 | 6 | 4% |
| 2005 | 293 | 60% |
| 2004 | 207 | 59% |
| 2003 | 207 | 57% |
| 2002 | 6 | 8% |
| 2001 | 11 | 7% |
| 2000 | 21 | 13% |
| 1999 | 20 | 12% |
| 1998 | 16 | 11% |
| 1997 | 19 | 6% |
| 1996 | 18 | 8% |
| 1995 | 16 | 9% |
| 1994 | 12 | 8% |
| 1993 | 11 | 8% |
| 1992 | 23 | 9% |
| 1991 | 3 | 4% |
| 1988 | 2 | 3% |
| 1987 | 1 | 2% |
| 1983 | 1 | 14% |
Other parts of the 1993 Mercury Grand Marquis
29 complaintsBrakes
22 complaintsElectrical system
20 complaintsVehicle speed control
19 complaintsSteering
18 complaintsSeats
10 complaintsVisibility (wipers, defrost, mirrors)
8 complaintsEngine cooling
7 complaintsAir bags
6 complaintsFuel system
6 complaintsTires
4 complaintsBody and structure
2 complaints
← All problems reported for the 1993 Mercury Grand Marquis
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology